How Much Time will Take Both to Cross Each Other?
Two trains each 220 m long are travelling at 45km/h and 54km/h in opposite directions. They will cross each other in
- 12sec.
- 18 sec.
- 16 sec.
- 24 sec.
Answer: (3) 16 sec.
Explanation:-
Two trains each 220 m long.
Speed of first train = 45km/h = 45 x 5/18 = 25/2m/s
Speed of other train = 54km/h = 54 x 5/18 = 15 m/s.
Total distance covered by both trains = 220 + 220 = 440 m.
They will cross each other = 440/ (25/2 + 15)
= 440 x 2 /55
= 16sec.
Hence, they will cross each other in 16 sec.
